Question

Perform any reaction with arrows showing hydroboration/oxidation of terminal and internal alkynes. Omit the mechanism of the boron oxidation step, but identify what reagents are needed and their purpose.

2. Perform any reaction with arrows showing hydrogenation (complete) of alkynes to alkanes. Omit mechanism.

3. Perform any reaction with arrows showing hydrogenation (chemoselective) of alkynes to cis alkenes over Lindlar (Pd, BaSO4, quinoline) catalyst. Omit mechanism but explain why you get the cis alkene.

Answer 1